165661520

素因数分解:

$2^4\times 5^1\times {\mathrm{31}}^1\times {\mathrm{67}}^1\times {\mathrm{997}}^1$

素因数の和:1108

約数の個数: 80

約数和(自身を含む): 403926528

約数和(自身を除く): 238265008

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 40, 62, 67, 80, 124, 134, 155, 248, 268, 310, 335, 496, 536, 620, 670, 997, 1072, 1240, 1340, 1994, 2077, 2480, 2680, 3988, 4154, 4985, 5360, 7976, 8308, 9970, 10385, 15952, 16616, 19940, 20770, 30907, 33232, 39880, 41540, 61814, 66799, 79760, 83080, 123628, 133598, 154535, 166160, 247256, 267196, 309070, 333995, 494512, 534392, 618140, 667990, 1068784, 1236280, 1335980, 2070769, 2472560, 2671960, 4141538, 5343920, 8283076, 10353845, 16566152, 20707690, 33132304, 41415380, 82830760, 165661520]

約数ペア:

[(1, 165661520), (2, 82830760), (4, 41415380), (5, 33132304), (8, 20707690), (10, 16566152), (16, 10353845), (20, 8283076), (31, 5343920), (40, 4141538), (62, 2671960), (67, 2472560), (80, 2070769), (124, 1335980), (134, 1236280), (155, 1068784), (248, 667990), (268, 618140), (310, 534392), (335, 494512), (496, 333995), (536, 309070), (620, 267196), (670, 247256), (997, 166160), (1072, 154535), (1240, 133598), (1340, 123628), (1994, 83080), (2077, 79760), (2480, 66799), (2680, 61814), (3988, 41540), (4154, 39880), (4985, 33232), (5360, 30907), (7976, 20770), (8308, 19940), (9970, 16616), (10385, 15952)]